The Bayes decision rule induced similarity measures

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56 Scopus citations


This paper first shows that the popular whitened cosine similarity measure is related to the Bayes decision rule under specific assumptions and then presents two new similarity measures: the PRM Whitened Cosine (PWC) similarity measure and the Within-Class Whitened Cosine (WWC) similarity measure. Experiments on face recognition using the Face Recognition Grand Challenge (FRGC) version 2 database show the effectiveness of the new measures.

Original languageEnglish (US)
Pages (from-to)1086-1090
Number of pages5
JournalIEEE Transactions on Pattern Analysis and Machine Intelligence
Issue number6
StatePublished - Jun 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Vision and Pattern Recognition
  • Computational Theory and Mathematics
  • Artificial Intelligence
  • Applied Mathematics


  • Face Recognition Grand Challenge (FRGC)
  • PRM Whitened Cosine (PWC) similarity measure
  • Whitened cosine similarity measure
  • Within-Class Whitened Cosine (WWC) similarity measure


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